/Engine/Source/Runtime/SlateCore/Public/Rendering/SlateRenderer.h
Pushes the rendering of the specified window to the specified render target
virtual void SetWindowRenderTarget ( const [SWindow](API\Runtime\SlateCore\Widgets\SWindow) & Window, class [IViewportRenderTargetProvider](API\Runtime\SlateCore\Textures\IViewportRenderTargetProvider) * Provider )